Type.GetProperties() can guarantee the order as same as declaration?

[Li7ye]

public class Foo
{
     public string Prop2 { get; set;}
     public string Prop1 { get; set;}
     public string Prop3 { get; set;}
}

typeof(Foo).GetProperties() can guarantee the order is Prop2, Prop1 and Prop3 ?

[huoyaoyuan]

It's an implementation detail of both compiler and reflection stack.

[Li7ye]

The .NET implementation can guarantee the order? My test looks like can guarantee the order currently in .NET 10 runtime

[huoyaoyuan]

Implementation detail is just the behaviour of certain version. There's no guarantee.

[Li7ye]

Ok, noted, but is there any workaround with built-in feature to guarantee?

[huoyaoyuan]

No, C# is designed as order independent and it's not expected to distinguish the order of members in original definition.

Field layout/enum values are exceptions for this rule. They are expected to be observable.